ARDANG, DEVTIANA MARCHELIA (2022) HUBUNGAN TEKSTUR SEDIMEN TERHADAP VEGETASI MANGROVE PADA LOKASI YANG BERBEDA DI DESA PASAR BANGGI, KABUPATEN REMBANG (22ik349). Undergraduate thesis, Universitas Diponegoro.

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Abstract

RINGKASAN

Devtiana Marchelia Ardang. 26040118120036, Hubungan Tekstur Sedimen
Terhadap Vegetasi Mangrove Pada Lokasi yang Berbeda di Desa Pasar Banggi,
Kabupaten Rembang. (Nirwani Soenardjo dan Nur Taufiq).
Mangrove merupakan vegetasi yang tumbuh diantara garis pantai dan
dipengaruhi oleh pasang surut. Selain pasang surut mangrove juga dipengaruhi
oleh adanya beberapa faktor parameter lingkungan seperti suhu, salinitas dan pH.
Pertumbuhan ekosistem mangrove juga dapat dilihat melalui ukuran butir sedimen
yaitu lumpur, liat dan pasir. Penelitian ini bertujuan untuk mengetahui kerapatan
mangrove, tekstur sedimen dan hubungan tekstur sedimen terhadap ekosistem
mangrove di pantai utara Rembang.
Penelitian ini dilakukan pada bulan Desember 2021, pengambilan data
dilakukan pada 3 stasiun yaitu PB1, PB2 dan PB3 di Hutan Mangrove Desa Pasar
Banggi, Kabupaten Rembang. Data yang diambil yaitu data analisis vegetasi
mangrove dan tekstur sedimen. Metode penelitian yang digunakan yaitu metode
kuantitatif. Penentuan stasiun penelitian dilakukan menggunakan metode
purposive sampling. Analisa vegetasi mangrove dilakukan pada plot berukuran 15
x 15 m dengan identifikasi pada kategori pohon, anakan (sapling) dan semai
(seedling). Sampel sedimen dan data analisa vegetasi mangrove diambil dari 3
stasiun yang terbagi dalam 3 wilayah yaitu dekat aliran sungai, dekat daerah
ekowisata dan dekat daerah tambak garam.
Hasil dari penelitian ini yaitu terdapat 4 spesies mangrove yaitu
Rhizophora mucronata, Rhizophora stylosa, Rhizophora apiculata dan Avicennia
marina. Setiap stasiun didominasi oleh spesies Rhizophora mucronata dan
Rhizophora stylosa. Hasil yang diperoleh dari tekstur sedimen di Desa Pasar
Banggi didominasi oleh fraksi lumpur (28,48-49,3%), fraksi pasir (30,7-63,76%)
dan fraksi liat (0-18%). Hasil penelitian menunjukkan bahwa kondisi kawasan
mangrove di desa Pasar banggi termasuk padat karena memiliki nilai kategori
kerapatan berkisar 1496,29-4266,67 ind/ha (KepMen LH NO. 21, 2004). Hasil uji
regresi linier berganda menunjukkan bahwa hubungan antara tekstur sedimen
dengan kerapatan mangrove pada PB1 (kerapatan rapat) mempunyai hubungan
rendah dengan koefisien korelasi (R) 0,225; PB2 (kerapatan rapat) mempunyai
hubungan yang sangat kuat dengan koefisien korelasi (R) 0,942; PB3 (kerapatan
sedang) mempunyai hubungan sangat kuat dengan koefisien korelasi (R) 0,999.
Kata kunci: Tekstur Sedimen; Mangrove; Pasar banggi; Kabupaten Rembang.

SUMMARY

Devtiana Marchelia Ardang. 26040118120036, Relationship of Sediment
Texture to Mangrove Vegetation at Different Locations in Pasar Banggi Village,
Rembang Regency. (Nirwani Soenardjo and Nur Taufiq).
Mangroves are vegetation that grows between coastlines and is influenced
by tides. In addition to the tides, mangroves are also influenced by the presence of
several environmental parameter factors such as temperature, salinity and pH.
The growth of mangrove ecosystems can also be seen through the size of
sedimentary grains, namely mud, clay and sand. This study aims to determine the
density of mangroves, sediment texture and the relationship of sediment texture to
ecosistem mangroves on the north coast of Rembang.
This research was conducted in December 2021, data collection was
carried out at 3 stations namely PB1, PB2 and PB3 in the Mangrove Forest of
Pasar Banggi Village, Rembang Regency. The data taken are mangrove
vegetation analysis data and sediment texture. The research method used is
quantitative method. Determination of research stations is done using purposive
sampling method. Analysis of mangrove vegetation was carried out on plots
measuring 15 x 15 m with identification in the categories of trees, saplings and
seedlings. Sediment samples and mangrove vegetation analysis data were taken
from 3 stations which were divided into 3 areas, namely river flows, ecotourism
areas and salt ponds.
The results of this study are that there are 4 species of mangrove, namely
Rhizophora mucronata, Rhizophora stylosa, Rhizophora apiculata and Avicennia
marina. Each station was dominated by Rhizophora mucronata and Rhizophora
stylosa species. The results obtained from the sediment texture in Pasar Banggi
Village are dominated by the mud fraction (28.48-49.3%), the sand fraction (30.7-63.76) and the clay fraction (0-18). The results showed that the condition of the
mangrove area in Pasar Banggi village was dense because it had a density
category value ranging from 1496.29 to 4266.67 ind/ha (KepMen LH NO. 21,
2004). The results of multiple linear regression test showed that the relationship
between sediment texture and mangrove density in PB1 (density) had a low
relationship with a correlation coefficient (R) of 0.225; PB2 (density) has a very
strong relationship with a correlation coefficient (R) of 0.942; PB3 (medium
density) has a very strong relationship with a correlation coefficient (R) of 0.999.
Keywords: Sediment Texture; Mangroves; Banggi market; Rembang Regency.

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